What’s Vulnerable › Vulnerabilities

CVE-2026-28526: BlueKitchen BTstack < 1.8.1 AVRCP Controller LIST_PLAYER_APPLICATION_SETTING_* Handlers OOB Read

• Severity: medium (CVSS 5.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-30 · updated 2026-07-14
• Weakness: CWE-125

Description

BlueKitchen BTstack versions prior to 1.8.1 contain an out-of-bounds read vulnerability in the AVRCP Controller LIST_PLAYER_APPLICATION_SETTING_ATTRIBUTES and LIST_PLAYER_APPLICATION_SETTING_VALUES handlers that allows attackers to read beyond buffer boundaries. A nearby attacker with a paired Bluetooth Classic connection can send a specially crafted VENDOR_DEPENDENT response with an attacker-controlled count value to trigger an out-of-bounds read from the L2CAP receive buffer, potentially causing a crash on resource-constrained devices.

Affected products

• BlueKitchen GmbH BTstack: before 1.8.1 — fixed in 1.8.1

How to fix

Upgrade to a fixed version: BlueKitchen GmbH BTstack 1.8.1. Check the vendor advisory for mitigations.

References

• https://github.com/bluekitchen/btstack/releases/tag/v1.8.1
• https://www.vulncheck.com/advisories/bluekitchen-btstack-avrcp-controller-list-player-application-setting-handlers-oob-read

Get alerted when CVE-2026-28526 or the next vulnerability affects your stack